These low profile inside corner transitions are approximately 3 1/2" from center to end. I installed guide tabs for easier installation! purchase price is for 8 inside corners. These are slight blems which didn't pass my standards but are still well made and sound and will transition up to 3 5/8" molding perfectly! This lowball price is a steal for someone looking for a bargain at $5 each! The pictures depict the exact blocks you'll be receiving! They have also been primed and painted two coats with Benjamin Moore super white semi-gloss paint! i am a custom fabricator so if you need more or less or need to combine with other transitions please message me.